I was using my pod x3 live when suddenly the sound gone, and now the screen shows nothing. I turned it off then on, and nothing changed. The unit still responds, if I push buttons like stomp, or delay it reacts properly. If I link it with my laptop, I can see my presets via gearbox, so my laptop sees the x3 live. Do you guys have any idea what have happened, or shall I see an expert about this.